refactor(lint): migrate use of .forEach to for...of

[Hweinstock]

Problem

The lint task is failing on the feature branch due to a leftover usage of forEach.

Solution

• switch it to for...of.

---

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
• License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.